20391588

素因数分解:

$2^2\times 3^9\times 7^1\times {\mathrm{37}}^1$

素因数の和:75

約数の個数: 120

約数和(自身を含む): 62827072

約数和(自身を除く): 42435484

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 37, 42, 54, 63, 74, 81, 84, 108, 111, 126, 148, 162, 189, 222, 243, 252, 259, 324, 333, 378, 444, 486, 518, 567, 666, 729, 756, 777, 972, 999, 1036, 1134, 1332, 1458, 1554, 1701, 1998, 2187, 2268, 2331, 2916, 2997, 3108, 3402, 3996, 4374, 4662, 5103, 5994, 6561, 6804, 6993, 8748, 8991, 9324, 10206, 11988, 13122, 13986, 15309, 17982, 19683, 20412, 20979, 26244, 26973, 27972, 30618, 35964, 39366, 41958, 45927, 53946, 61236, 62937, 78732, 80919, 83916, 91854, 107892, 125874, 137781, 161838, 183708, 188811, 242757, 251748, 275562, 323676, 377622, 485514, 551124, 566433, 728271, 755244, 971028, 1132866, 1456542, 1699299, 2265732, 2913084, 3398598, 5097897, 6797196, 10195794, 20391588]

約数ペア:

[(1, 20391588), (2, 10195794), (3, 6797196), (4, 5097897), (6, 3398598), (7, 2913084), (9, 2265732), (12, 1699299), (14, 1456542), (18, 1132866), (21, 971028), (27, 755244), (28, 728271), (36, 566433), (37, 551124), (42, 485514), (54, 377622), (63, 323676), (74, 275562), (81, 251748), (84, 242757), (108, 188811), (111, 183708), (126, 161838), (148, 137781), (162, 125874), (189, 107892), (222, 91854), (243, 83916), (252, 80919), (259, 78732), (324, 62937), (333, 61236), (378, 53946), (444, 45927), (486, 41958), (518, 39366), (567, 35964), (666, 30618), (729, 27972), (756, 26973), (777, 26244), (972, 20979), (999, 20412), (1036, 19683), (1134, 17982), (1332, 15309), (1458, 13986), (1554, 13122), (1701, 11988), (1998, 10206), (2187, 9324), (2268, 8991), (2331, 8748), (2916, 6993), (2997, 6804), (3108, 6561), (3402, 5994), (3996, 5103), (4374, 4662)]